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DOI	10.1039/c8ee01883a
	A rechargeable aqueous Zn2+-battery with high power density and a long cycle-life
	Wang F.; Hu E.; Sun W.; Gao T.; Ji X.; Fan X.; Han F.; Yang X.-Q.; Xu K.; Wang C.
发表日期	2018
ISSN	17545692
起始页码	3168
结束页码	3175
卷号	11 期号:11
英文摘要	Li-Ion batteries (LIBs) are approaching their energy limits imposed by their intercalation chemistry nature. As alternatives, multivalent (MV) chemistries bring both promises and challenges, with the main obstacle being the sluggish diffusion of MV-cations due to their strong electrostatic interaction with host lattices. In this work, we demonstrated that polyanion based robust crystal architecture could enable ultrafast and reversible Zn2+-intercalation and de-intercalation at a high working voltage. The nominal bivalence of Zn2+ was successfully delocalized by multiple atoms through the p-d hybridization between the V-d and O-p orbitals; hence the inserted Zn2+ only bears an effective charge of 1.336, rendering its high mobility. The novel aqueous rechargeable 1.7 V Zn/LiV2(PO4)3 cell based on such a mechanism delivers a high power density (8000 W kg-1 at 60C) comparable to supercapacitors, and a high energy density (218 W h kg-1 at 1C) close to LIBs, with an extraordinarily long cycle life of 4000 cycles. All of these parameters far exceed those of Zn batteries reported so far. The cell-level volumetric and specific energy densities of the Zn/LiV2(PO4)3 cell are 320 W h L-1 and 150 W h kg-1, respectively, which are even better than those of first-generation LIBs. Combined with the intrinsic safety of its aqueous chemistry and its wide working temperature range, this cell makes a strong candidate for automotive applications. © The Royal Society of Chemistry 2018.
英文关键词	Intercalation; Lithium-ion batteries; Aqueous chemistry; Automotive applications; Crystal architecture; High energy densities; High power density; Intercalation chemistry; Specific energy density; Working temperatures; Charging (batteries); aqueous solution; chemical bonding; diffusion; electrochemistry; equipment component; fuel cell; lattice dynamics; lithium; zinc
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190076
作者单位	Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, United States; Electrochemistry Branch, Sensor and Electron Devices Dirct., Power and Energy Division, U.S. Army Research Laboratory, Adelphi, MD 20783, United States; Chemistry Division, Brookhaven National Laboratory, Upton, NY 11973, United States
推荐引用方式 GB/T 7714	Wang F.,Hu E.,Sun W.,et al. A rechargeable aqueous Zn2+-battery with high power density and a long cycle-life[J],2018,11(11).
APA	Wang F..,Hu E..,Sun W..,Gao T..,Ji X..,...&Wang C..(2018).A rechargeable aqueous Zn2+-battery with high power density and a long cycle-life.Energy & Environmental Science,11(11).
MLA	Wang F.,et al."A rechargeable aqueous Zn2+-battery with high power density and a long cycle-life".Energy & Environmental Science 11.11(2018).